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Transport in Coupled Quantum Dots: Kondo Effect Versus Anti-Ferromagnetic Correlation

C. A. Büsser·E. V. Anda·A. L Lima·Maria A. Davidovich·G. Chiappe
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Abstract

The interplay between the Kondo effect and the inter-dot magnetic interaction in a coupled-dot system is studied. An exact result for the transport properties at zero temperature is obtained by diagonalizing a cluster, composed by the double-dot and its vicinity, which is connected to leads. It is shown that the system goes continuously from the Kondo regime to an anti-ferromagnetic state as the inter-dot interaction is increased. The conductance, the charge at the dots and the spin-spin correlation are obtained as a function of the gate potential.

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C. A. Büsser, E. V. Anda, A. L Lima, Maria A. Davidovich, G. Chiappe. 1999-12-01. Transport in Coupled Quantum Dots: Kondo Effect Versus Anti-Ferromagnetic Correlation. https://doi.org/10.1103/physrevb.62.9907

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